According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need to know.

However, a deep freeze, thanks to the polar vortex dipping down from Siberia, is about to bring even harsher arctic blast to nearly 300 million Americans starting this weekend. Maps show where and when the cold front will arrive.

The United States continued to freeze through a polar vortex that brought rare cold to the southern United States and chances of freezing weather through much of the country.